Describing fractions and proport

According to this pie chart, a third of students' leisure time is spent watching TV.
如饼图所示，学生的闲暇时间有三分之一都花在看电视上。

One in five hours is spent socializing.
每五个小时中有一个小时花在社交活动上。

Socializing accounts for / makes up about 20% of leisure time.
社交活动占去大约百分之二十的闲暇时间。

Students spend twice as much time playing computer games as doing sport.
学生们玩电脑游戏的时间是做运动时间的两倍。

Three times as many hours are spent playing computer games as reading.
玩电脑游戏的时间是阅读时间的三倍。

The figure for playing computer games is three times higher than the figure for reading.
玩电脑游戏的时间比阅读时间多两倍。

The largest proportion of time is spent playing computer games.
大部分时间都花在玩电脑游戏上。